US2643856A

US2643856A - Hoist

Info

Publication number: US2643856A
Application number: US57670A
Authority: US
Inventors: Charles M Sales
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-11-01
Filing date: 1948-11-01
Publication date: 1953-06-30
Anticipated expiration: 1970-06-30

Description

June 30, 1953 Q SALES I 2,643,856

Filed Nov. 1, 1948 2 Sheets-Sheet l 7 June 30, 1953 c SALES 2,643,856

HOIST Filed Nov. 1, 1948 2 sheetgbsileet 2 Patented June 30, 1953 UNITED "STATES PATENT OFFICE Charles M. Sales, Seymour, Iowa Application November 1, 1948, Serial No. 57,670

This invention relates to a portable hoist and more particularly to a hoist for farm use; one use where it has been found very practical is in raising wagon bodies filled with corn or other grain so the, wagon load may be dumped into an elevator.

There has been a need for a hoist for some time that is portable by hand, that will raise the weight of a loaded wagon of thesize generally used on farms and will be easily operable. Hoists are now available that are electrically operable which limits their general utility. Other type hoists and jacks are available for the same purpose but all of those now available are complicated structures which puts them in a high price range. It is with the problem of providing a simple hoist for general iarm use that the present invention is interested.

It is an object of the invention to provide a hoist that is light in weight so that one man can easily carry the hoist; a hoist sufficiently rugged that it can lift up to two tons; and a hoist when not in use that can be supported in an upright position-in a handy-position to be attached for use.

It is another idea of the invention to provide a hoist wherein a common and ordinary automobile jack is used as the power to operate the hoist and a user can use his automobile jack for the power to operate the hoist without the purchase of a new power means or jack. The jack is removable and easily inserted into the hoist; hence can be done in a matter of seconds.

It is still another objector the invention to provide a hoist easily attached to the member to be lifted and easily operated, requiring no one ofspecial skill to assemble the hoist into an operable structure or to operate the hoist after assembly.

It is a still further object of the invention to provide a hoist simple in construction and operation and economical both in construction and operation; a hoist that is long lasting and du- 8 Claims. (Cl. 254-139) rable; requiring little repair or lost'time in operation; and a hoist that can be supplied and operated at a low cost.

With the foregoing and other objects in view, the invention will be more fully described herewith and will be particularly pointed out in the claims appended hereto.

In the drawings, wherein like symbols refer to like or corresponding parts throughout the several views:

Figure 1 is an elevational view of the hoist, showing the jack removed and the hoist supported in an upright position.

Figure 2 is an elevation view of the hoist showing the jack in place and the hoist supported in an upright position.

Figure 3 is a sectional view taken on the line 3-3 of Figure 2.

Figure 4 is a sectional view taken on the line d4 of Figure 2 and showing the hoist connected to a wagon box in operable position but before lifting of the wagon box has started.

Figure 5 is a side elevational View of the hoist attached to a wagon box with the wagon box lifted to its maximum height.

Figure 6 shows a different species of attachment means to attach the hoist to a means to be lifted.

The hoist is made up of a main body portion I which comprises apair of

legs

2 and 3 which may be pipe members of iron or steel. The

legs

2 and 3 have foot portions 4 to rest on the ground surface. The

legs

2 and 3 are spread apart at the bottom: ends thereof, but approach each other at the top and are secured together at the top by any suitable means. In the drawing these meansare shown as a top ring 5 and a ring 6 spaced about two inches from the topring 5 and suitably welded to the

legs

2 and 3. Braces 1 and 8 are welded to the

legs

2 and 3 about onethird of the way-from the bottom of the

legs

2 and 3 and brace 9 is welded to the

legs

2 and 3 about one-third of the way from the top of the

legs

2 and 3 to insure'a sturdy structure.

The braces-l and 8 have a plate In mounted thereon to form a ledge and an opening I! is in the ledge portion I0. An angle bar 12 extends upwardly from the brace 8 and is attached to the brace B as b-y'welding. The upper end of the front face' l3 of the angle bar I2 attaches to thebrace'il, as by welding, and has a projection I4 extending therefrom. The projection I4 has an opening into which a third leg I5 fits. The opening in the projection I l is suiiiciently large that the third leg can swing therein. The

main body portion 1 can be supported in an upright position when third leg I 5 is pivoted away from the main body portion I as shown in Figures 1 and 2. When the hoist is in operable position as shown in Figures 4 and 5, the leg I5 swings into the body portion I and serves no supporting function. When the third leg l5 swings in close the main body portion I, the hoist becomes a compact structure, requiring very little space for storage. The side face iii of the angle iron I2 has a series of openings I1 for a purpose to be later described.

Mounted on the top of the main body portion I and extending through the rings 5 and 6 is an elongated rigid lifting member or boom I8. The boom I8 is a piece of pipe having arms 89 and 2i! at the top thereof which receive a pulley 2t therein which pulley is rotatable on an axle 22 attached to the arms I9 and 2s. A protecting cover 23 covers the top of the pulley 2I. A jack 24, which may be a common hydraulic jack used to lift automobiles to remove tires from automobiles may be used with the hoist. The ledge I having the opening I I receives a projection 25 on the bottom of the jack 24 to support and position the jack 24 in the main body portion I of the hoist. Figure 1 shows the boom is lifted upwardly, so the top of the jack 24 can be entered into the boom I8. The top of the jack 24 has a projecting portion 25' that fits into the boom I8. When the jack is in the body portion I the boom is supported by the jack 24. When jack 24 is removed, the boom- I8 willhang from ring 5. The jack 24 has ahandle 26 and the jack 24 may be of the hydraulic type. As the handle 28 is moved up anddown, the parts of the jack 24 are separated, hence the boom E8 is moved upwardly through rings and 8.

. A line 21 which may be of any material such as wire or rope extends over the pulley 2|. One end of the line 21 has a hook 28 to enter into openings 11 in the angle iron I2 while the other end has a claw member 29 to fit under the front cross support 30 of a wagon box. 'The claw 29 is first placed under the cross support and the line 21 pulled taut, after which hook 28 is placed into an opening [1 opposite the hook 29.

In operation, the hoist is placed in an upright position supported on the

legs

2, 3 and I5 as in Figure 1. The boom I8 is raised in the rings 5 and 6 and may be supported in the raised position by allowing the boom I8 to cant in the rings 5 and 6. The jack 24 is then mounted inthe main body support I by placing the projection 25 in the opening II in ledge Ill. The top of the jack 24 is supported by hand until the boom I8 can be slipped over the projection 25 on top of the jack 24. The hoist is now in assembled relation as shown in Figure 2.

The hoist may now be moved to the position of Figure 4 or into the position to hoist a member to be raised. The hoist may still be supported from the three legs while the claw 29 is put in place on the cross support 30 of the wagon box after which the hook 28 is put into the proper opening H. The hoist is now ready to be actuated. An operator actuates the handle 26 on jack 24 and the parts of the jack 24 separate and I the boom I8 moves upwardly. Since the hook 28 anchors'one end of the line 27, the upward movement of the boom I8 is translated into a lifting force at the claw end 29 of the;line 21. The weight of the load being lifted comes on the pulley 2I and is translated into a compressive force acting straight downward. This transfers the weight to

legs

2 and 3 and the leg I5 now swings into the main body portion I.

Figure 5 shows the hoist in its maximum raised position. This raised position has been designed for approximately 39 inches which has been sufficient to raise a farm wagon to give it an incline so that the contents of the wagon will slide out. The jack 24 may be lowered in the usual way to lower the hoist and member raised and the leg I5 may be pulled back to support the hoist in an upright position. The hoist may be sold with jack included or not as the customer desires.

Figure 6 shows a different member for the end of the line 2 I, where the hoist may be used with lifted.

objects other than wagon boxes. The portion 3I is fiat and not claw-like.

It is to be understood that the form of my invention, herewith shown and described, is to be taken as a preferred example of the same, and that various changes in shape, size and arrangement of parts may be resorted to, without departing from the spirit of my invention, or the scope of the subjoined claims.

Having thus described my invention, I claim:

1. A hoist comprising a main body portion, a ledge on the main body portion below the top thereof and receiving a jack thereon, said jack having an extensible lifting element, a boom mounted'on the main body portion and longitudinally movable through the top of the main body portion which latter provides a surroundingguide for the boom, said boom seated on the lifting element of the jack and movable with said lifting element, a line passing over the top of the boom having one end anchored and. the other end of the line attached to a member to be 2. A hoist comprising a main body portion having a pair of legs, said legs attached together at the top and by braces attached to the legs between the top and bottom of the legs, a ledge on one of the braces receiving a jack thereon, said jack having an extensible lifting element, a boom mounted on the main body portion and longitudinally movable through the top of the main body portion which latter provides a surrounding guide for the boom, said boomseated on the lifting element of the jack and movable with the latter, a line passing over the top of the boom having one end anchored and the other end of the line attached to a member to be lifted.

3. A hoist comprising a main body portion having a pair of legs, said legs attached together at the top by a ring member and by braces attached to the legs between the top and bottom of the legs, aledge on one of the braces receiving a jack thereon, said jack having an extensible lifting element, a boom mounted on the main body portion and longitudinally movable through the ring on top of the main body portion, said boom seated on the lifting element of the jack and movable with the latter, a line passing over the top of the boom having one end anchored and the other end of the line attached to a member to be lifted. v

4. A hoist comprising a main body portion having a pair of legs, said legs attached together at the top by a ring member and by braces attached to the legs between the top and bottom of the legs and spaced in the direction of the length of the latter, a ledge on one of the braces receiving a jack thereon, said jack having an extensible lifting element, an angle iron attached to'the brace having the ledge and extending upwardly and attached to a second brace, a boom mounted on the main body portion and longitudinally movable through the ring on top thereof, said boom seated on the lifting element of the jack and movable therewith, a line passing overthe top of the boom having one end anchored to the upwardly extending angle iron of the main body portion and the other end ofthe line attached to the member to be lifted. I

5. A hoist comprising a main body portion having a pair'of legs, said legs attached together at the top by a ring member and by braces attached to the legs between the top and bottom of the legs, said braces spaced in the direction of the length of the latter, a ledge on one of the braces receiving a jack thereon, said jack having an extensible lifting element, an angle iron attached to the brace having the ledge and extending upwardly and attached to a second brace, one side of said angle iron having a series of openings, a boom having a pulley on the top thereof and mounted on the main body portion and longitudinally movable through the ring on top of the main body portion, said boom seated on the extensible element of the jack and movable with the latter, a line passing over the pulley on top of the boom having one end anchored in one of the openings in the upwardly extending angle iron of the main body portion and the other end of the line attached to the member to be lifted.

I 6. A hoist comprising a main body portion having a pair of legs, said legs attached together at the top by a ring member and by braces attached to the legs between the top and bottom of the legs, said braces spaced in the direction of the length of the latter, a ledge on one of the braces receiving a jack thereon, said jack having an extensible lifting element, an angle iron attached to the brace having the ledge and extending upwardly and attached to a second brace, the top of the angle iron having a flange extending therefrom with an opening therein to receive a third leg, a boom having a pulley on the top thereof and mounted on the main body portion and longitudinally movable through the ring on top of the main body portion, said boom seated on the extensible element of the jack and movable with the latter, a line passing over the pulley on top of the boom having one end anchored to the angle iron of the main body portion and the other end of the line attached to the member to be lifted.

7. A hoist comprising a main body portion, a ledge on the main body portion below the top thereof, a jack seated on said ledge, said jack having associated with it an elongated rigid lifting means longitudinally movable through the top of said main body portion, guide means for said elongated means independent of the jack and carried by said main body portion adjacent its top, and a line passing over the outer end of said elongated means and having one end anchored and the other end adapted to be attached to a member to .be lifted.

8. A hoist comprising a main prop form body portion having side members, at least two cross members spaced in the direction of the length of said side members and connecting same, one cross member adjacent the upper end of said body portion and another at a point therebelow, the last mentioned cross member providing a ledge seat, a lifting jack unit removably carried by said seat, an elongated rigid lifting means associated with said jack and actuatable beyond the top of said body portion, a guide independent of the jack formed by said upper side-connecting cross member and through which said elongated means extends, and a line passing over the outer end of said elongated means and having one end anchored and the other end adapted to be attached to a member to be lifted.

CHARLES M. SALES.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 795,524 Leffmann July 25, 1905 2,214,440 Rothery Sept. 10, 1940 2,324,096 Lilly July 13, 1943 2,474,045 Freeland June 21, 1949 2,543,210 Wagstafi' Feb. 27, 1951 2,549,996 Walsh Apr. 24, 1951